Mitutoyo 983508 Depth Micrometer Rod 3 to 4 Inches

Product Description

The MITUTOYO 983508 is a replacement depth micrometer rod designed for extending the measurement range of compatible Mitutoyo depth micrometers. The rod allows depth measurements from 3 to 4 inches, making it a direct accessory for field calibration work and precision machining applications. With a rod diameter of 4.00 mm and an overall length of 180.50 mm, this rod meets the dimensional tolerances required for accurate depth readings. It is installed by machinists, tool and die technicians, and metrology professionals who service or operate Mitutoyo depth micrometer sets.

This rod is used in manufacturing, machine shops, and inspection environments where precise depth measurements are required. It is suited for both production floor use and quality control inspection stations. The 983508 extends the usable range of a depth micrometer set, allowing a single base unit to cover multiple measurement intervals by swapping rods as needed. Sold individually, it covers the 3 to 4 inch measurement interval.

Key Features

• Covers the 3 to 4 inch depth measurement range
• Rod diameter of 4.00 mm for compatibility with Mitutoyo depth micrometer bases
• Overall length of 180.50 mm
• Sold as a single replacement rod
• Accessory type: rod, for use as a direct swap in compatible depth mic sets

Compatibility

Designed for use with 129 and 329 series Mitutoyo depth micrometers.

Installation Notes

Rod replacement on a depth micrometer should be performed by a qualified machinist or metrologist on a clean, stable work surface. Ensure the micrometer base is fully cleared of debris before inserting the rod to avoid damage to the measuring faces. Follow the instrument manufacturer's service instructions for proper rod seating and zero verification after installation. Recalibrate the instrument against a known reference standard after any rod change.